1. School of Environmental & Rural Sciences; University of New England; Armidale New South Wales Australia
2. School of the Environment; University of Technology; Sydney New South Wales Australia
3. National Centre for Groundwater Research and Training; University of Technology; Sydney New South Wales Australia
4. Department of Biology; Macquarie University; New South Wales Australia
5. Soil Science & Agricultural Engineering; University of Zimbabwe; Harare Zimbabwe
6. Centre for African Conservation Ecology; Nelson Mandela Metropolitan University; Port Elizabeth South Africa